Congrats on your first jam! For me as a very casual gamer, the difficulty was sort of crazy. It feels like maybe you figured out exactly how to get through it, but to me, it felt like I kept dying because I just didn't know where the next enemy was going to come from. I see a few other people saying that the attacks felt a little slow, and I'd agree with that. I felt like I was mostly running away, and then trying to attack only when absolutely necessary.
However, the fact that you progressively gave the player new ways to attack kept me pushing through to what felt like the final level. Unfortunately, I just didn't have the control to beat that, but kept trying a few times.
Great job!